Arcmark – macOS bookmark manager sidebar for any browser

Summary: Arcmark is a native macOS bookmark manager that attaches as a sidebar to any browser window using macOS Accessibility APIs. It organizes bookmarks with workspaces, nested folders, and drag-and-drop, storing data locally in a JSON file without cloud sync or accounts.

What it does

Arcmark integrates a sidebar bookmark manager with browsers like Safari, Chrome, and Brave, following the window. It supports importing bookmarks from Arc and Chrome, and offers customizable workspace colors and folder structures.

Who it's for

It is designed for macOS users who want a local, sidebar-based bookmark manager compatible with multiple browsers, especially those transitioning from Arc Browser.

Why it matters

Arcmark addresses the lack of quality sidebar bookmark organization across browsers by providing a consistent, local-first solution that preserves folder structures and workflows.